• Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
• Review Strategy Based Diagnosis for an overview of the diagnostic approach.
• Diagnostic Procedure Instructions provides an overview of each diagnostic category.

For symptom byte information refer to Symptom Byte List

When a memory switch is pressed, the signal circuit from the seat memory control module is pulled low through the switch contacts and series of resistors indicating the memory recall request. In response to this signal, the seat memory control module commands the appropriate seat motors to move to the pre-recorded seat positions stored in memory.

• DTC B1327 must not be present.
• Battery voltage must be between 9–16 V.

If the seat memory control module detects a short to voltage on the memory seat switch signal circuit this DTC will set.

If the seat memory control module detects a short to ground on the memory seat switch signal circuit this DTC will set.

The seat memory control module detects a stuck Memory 1, Memory 2, or Exit switch for a given amount of time.

If the memory set switch signal is active for greater than 15 s this DTC will set.

• Current and history codes are set.
• All memory recall commands and are ignored.

• The DTC automatically clears when the switch circuit setting the DTC is no longer active.
• A history DTC will clear once 50 consecutive fault-free ignition cycles have occurred.

Driver Seat Schematics

Master Electrical Component List

Memory Seats Description and Operation

• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs

Control Module References for scan tool information

1. Ignition ON.
2. Verify the scan tool Seat Memory Control Module Memory Recall Switches parameter changes between Inactive and Memory 1 when pressing the memory 1 switch.
• If the parameter does not change

  Refer to Circuit/System Testing.

• If the parameter changes
3. Verify the scan tool Seat Memory Control Module Memory Recall Switches parameter changes between Inactive and Memory 2 when pressing the memory 2 switch.
• If the parameter does not change

  Refer to Circuit/System Testing.

• If the parameter changes
4. Verify the scan tool Seat Memory Control Module Memory Recall Switches parameter changes between Inactive and Exit when pressing the EXIT switch.
• If the parameter does not change

  Refer to Circuit/System Testing.

• If the parameter changes
5. Verify the scan tool Memory Recall Switches parameter changes between Inactive and Active when pressing the SET switch.
• If the parameter does not change

  Refer to Circuit/System Testing.

• If the parameter changes
6. All OK.

1. Ignition OFF, disconnect the harness connector at the S47D Seat Memory Switch – Driver.
2. Ignition ON, press a power seat switch in order to wake up the K40D Seat Memory Control Module – Driver.
3. Test for 9 V or greater between each signal circuit terminal listed below and ground:
• Memory set switch signal terminal 5
• Memory switch signal terminal 6
• If less than 9 V
1. Ignition OFF, disconnect the X6 harness connector at the K40D Seat Memory Control Module – Driver.
2. Test for infinite resistance between the signal circuit and ground.
• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance
3. Test for less than 2 Ω in the signal circuit end to end.
• If 2 Ω or greater, repair the open/high resistance in the circuit.
• If less than 2 Ω, replace the K40D Seat Memory Control Module – Driver.
• If 9 V or greater
4. Ignition OFF, disconnect the X6 harness connector at the K40D Seat Memory Control Module – Driver, ignition ON.
5. Test for less than 1 V between each signal circuit terminal listed below and ground:
• Memory set switch signal terminal 5
• Memory switch signal terminal 6
• If 1 V or greater

  Repair the short to voltage on the circuit.

• If less than 1 V
6. Test or replace the S47D Seat Memory Switch – Driver.

1. Ignition OFF, disconnect the harness connector at the S47D Seat Memory Switch – Driver.
2. Test for infinite resistance between the ground terminal 1 and each signal terminal listed below with the switch in the open position.
• Terminal 5
• Terminal 6
• If less than infinite resistance

  Replace the S47D Seat Memory Switch – Driver.

• If infinite resistance
3. Test for less than 4 Ω between the signal terminal 5 and the ground terminal 1 while pressing the memory SET button.
• If 4 Ω or greater

  Replace the S47D Seat Memory Switch – Driver.

• If less than 4 Ω
4. Test for 570–697 Ω between the signal terminal 6 and the low reference terminal 1 while pressing the Memory 1 button.
• If not between 570–697 Ω

  Replace the S47D Seat Memory Switch – Driver.

• If between 570–697 Ω
5. Test for 1800–2201 Ω between the signal terminal 6 and the low reference terminal 1 while pressing the Memory 2 button.
• If not between 1800–2201 Ω

  Replace the S47D Seat Memory Switch – Driver.

• If between 1800–2201 Ω
6. Test for 5.25k–673 kΩ between the signal terminal 6 and the low reference terminal 1 while pressing the Exit button.
• If not between 5.25k–673 kΩ

  Replace the S47D Seat Memory Switch – Driver.

• If between 5.25k–673 kΩ
7. All OK.

Perform the Diagnostic Repair Verification after completing the repair.

• Front Seat Adjuster Memory Switch Replacement
• Control Module References for K40D Seat Memory Control Module – Driver replacement, programming and setup